# this file has 24 nodes, 42 edges
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1 2
1 3
1 4
1 5
5 6
5 7
8 9
8 10
8 5
11 13
11 8
14 16
14 11
17 19
17 14
20 22
20 17
22 19
23 22
24 23
24 21
21 22
21 18
19 16
18 19
18 15
16 13
15 16
15 12
13 10
12 13
12 9
9 10
9 6
6 7
4 24
4 23
4 20
3 7
2 3
2 24
2 6
